<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>外边距设置</title>
    <style>
       div{
           width: 200px;
           height: 200px;
           background-color: limegreen;
           /* 外边距设置 */
           /* margin-left:100px;
           margin-top: 100px; 
           margin-right: 50px;
           margin-bottom: 70px; */
           /* margin: 100px 200px; */
           /* margin: 10px 20px 30px; */
           /* 上右下左 */
           margin: 10px 20px 30px 40px ;
       }
    </style>
</head>
<body>
    <div>外边距设置</div>
</body>
</html>